Re: [PATCH v3 0/3] qemu: Deal with panic device on pSeries

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On 05/28/2015 10:39 AM, Andrea Bolognani wrote:
> Currently, having the <panic> element in a domain XML prevents it from
> starting on pSeries. The error message in this case is not very accurate,
> and the first commit improves it.
> 
> Since the guest firmware provides the same features as the pvpanic
> device for pSeries guests, the element should be allowed. The second
> commit implements this change.
> 
> It being part of the firmware, the <panic> element should actually
> always be present in the domain XML: the third commit makes sure
> this is the case.
> 
> Andrea Bolognani (3):
>   qemu: Improve error message for missing QEMU_CAPS_DEVICE_PANIC.
>   qemu: Allow panic device for pSeries guests
>   qemu: Automatically add <panic> element for pSeries guests.
> 
>  docs/formatdomain.html.in                          |  8 ++++-
>  src/qemu/qemu_command.c                            | 34 ++++++++++++++++------
>  src/qemu/qemu_domain.c                             | 14 +++++++++
>  .../qemuxml2argvdata/qemuxml2argv-pseries-disk.xml |  1 +
>  .../qemuxml2argv-pseries-nvram.xml                 |  1 +
>  .../qemuxml2argv-pseries-panic-address.xml         | 32 ++++++++++++++++++++
>  .../qemuxml2argv-pseries-panic-missing.args        |  7 +++++
>  .../qemuxml2argv-pseries-panic-missing.xml         | 29 ++++++++++++++++++
>  .../qemuxml2argv-pseries-panic-no-address.args     |  7 +++++
>  .../qemuxml2argv-pseries-panic-no-address.xml      | 30 +++++++++++++++++++
>  tests/qemuxml2argvtest.c                           |  6 ++++
>  .../qemuxml2xmlout-pseries-panic-missing.xml       | 30 +++++++++++++++++++
>  tests/qemuxml2xmltest.c                            |  2 ++
>  13 files changed, 191 insertions(+), 10 deletions(-)
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic-address.xml
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic-missing.args
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic-missing.xml
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic-no-address.args
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic-no-address.xml
>  create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-panic-missing.xml
> 

Other than minor adjustment to error message in 1/3 (use 'the QEMU
binary' like other similar error messages not just 'QEMU') and a
tweak to formatdomain.html.in in 3/3:

-      For pSeries guests, this feature is always enabled because it's
-      implemented by the guest firmware. libvirt will automatically add the
-      <code>panic</code> element to the domain XML to reflect this fact.
+      For pSeries guests, this feature is always enabled since it's
+      implemented by the guest firmware, thus libvirt automatically
+      adds the <code>panic</code> element to the domain XML.

ACK series... I'll push soon.

John

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